L12M4E55 Laptop Battery for Lenovo Eraser B50-70 (80EU) B50-30 (80ES) N50-70 N40-70 N50 E50-80 N40-30 N40-45 N50-30 N50-45 M4400A N40 N40-70 B50-30 B50-45 B50-70 B40-45 B40-70 B50 B40-30 B40 M4450A

✅Specifications:
Battery Type:Li-ion
Voltage:14.4V
Label Capacity:2600mAh
Product Type:Replacement Battery
Condition : Brand New, 'A' grade cells,100% OEM Compatible!

✅Package includes:
1x Battery
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✅Warm tips(Very important!!!):

(1)Before purchase, please confirm that your laptop model or battery part number compatible with in our title;
(2) if laptop model or battery part number in our title,please make a comparison between your original battery and our item,whether it is the same appearance(especially the connector location);if they are all same,and then you can buy it,thanks
(3)if you are still not sure,you can contact us,and we will give you advice in time.

✅How to check your laptop model?
Method 1:You can check your laptop model on the label of back of your laptop

Method 2: Use System Information to find your laptop model
Step 1: Press Windows + R to open Run window.
Step 2: Input "msinfo32" in the empty box and click OK to open System Information.
Step 3: Keep in the System Summary section, and you will find the System Model item in the right pane.

Method 3: Remove Battery from Laptop to find your laptop battery part number

Step 1: Switch off the laptop and unplug the power cable in case of electric shock
Step 2: Remove the back panel with the screwdriver. You should to this with care avoiding any harm to the laptop components.
Step 3: Disconnect the cable connected to the battery and then take out the battery. After that, you can check the specifications of your battery.

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✅Install A New Battery:

You need to turn off your laptop and disconnect the power.
Disconnect the connection between the old battery and the motherboard to avoid unnecessary damage caused by disassembling the battery. Then unscrew the old battery screws one by one and carefully save each screw.
Remove the old battery, carefully install the new battery on the battery case, screw in the screw, and connect the wiring of the new battery.
If you don't understand the above steps, you can search for the video about laptop battery installation on YouTube. Maybe it will help you.

✅Laptop Battery Instructions:

Discharge the new battery to 10% (not 0%), then charge(100%) and cycle 3-5 times to wake up the new battery.
It can calibrate the state of the battery by performing a complete and effective charging and discharging of the battery once a month.
Charge it to around 50% when you store it long term.
Do not keep your battery below 5% or deep discharge state (long time 0%), may turn on battery protection and cause the battery to fail to charge.
Please feel welcomed to notify us of any inconvenience or fault in our battery.

✅The following are troubleshooting methods:

Turn off the laptop.
Unplug AC power.
Remove the battery.
Replace AC power.
Turn on laptop,allow OS to boot.
Once logged into the machine, perform a normal shut down.
Unplug AC power.
Replace battery.